Mercury 75 DFI (3 CYL.)(1.5L) (0T980000 THRU 1B226999) Parts & Diagrams

🔎 Mercury 75 DFI (3 CYL.)(1.5L) Reference Library — Exploded parts diagrams (34 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 75 DFI (3 CYL.)(1.5L) is a 4-Stroke, Inline 4-Cylinder, EFI, SOHC outboard motor. Suited for bay boats, pontoons, and center-console fishing boats requiring reliable mid-range power.

Quick Reference Specifications

Specification	Value
Engine Type	4-Stroke, Inline 4-Cylinder, EFI, SOHC
Horsepower	75 HP
Displacement	2100 cc
Bore x Stroke	90 mm x 81 mm
Spark Plug (Type & Gap)	NGK IZFR6F-11
Engine Oil Capacity	5.2 L (5.5 quart)
Recommended Engine Oil	Mercury FourStroke Oil 10W-30
Gear Case Oil Capacity	710 mL (24 fl oz)
Idle Speed (in gear)	650 ± 50 RPM (in gear)
Full Throttle RPM Range	4500-5500
Fuel	Unleaded Gasoline, 87 Octane min.

Always verify specifications against your owner's manual for your specific serial number range.

Common Issues & Recommended Parts

Below are common maintenance scenarios for the Mercury 75 DFI (3 CYL.)(1.5L):

Water Pump / Overheating: If the tell-tale stream is weak or absent, the water pump impeller likely needs replacement. Inspect annually or every 100 hours. → Recommended: Water Pump Impeller Kit
Engine Oil / Maintenance Light: 4-stroke engines require regular oil and filter changes. Use marine-grade oil rated for your engine. Change every 100 hours or annually. → Recommended: Oil Filter, Engine Oil
Fuel Injector Issues (EFI models): Rough idle or misfires may indicate clogged fuel injectors. Use fuel stabilizer and clean injectors periodically. → Recommended: Fuel Injector, Fuel Filter
Gear Case Oil Leak: Check lower unit seals if gear oil appears milky (water contamination). Replace seals and gaskets during lower unit service. → Recommended: Lower Unit Seal Kit, Drain Plug Gaskets
Anode Corrosion: Inspect sacrificial anodes regularly, especially in saltwater. Replace when 50% depleted to protect against galvanic corrosion. → Recommended: Zinc/Aluminum Anode Kit

Parts Diagrams & OEM Part Numbers

Expand the sections below to view detailed exploded parts diagrams and find the exact OEM replacement components for your Mercury 75 DFI (3 CYL.)(1.5L).

▶Accessories (1 parts)

Ref	OEM Part #	Part Name
0	896648A07	STEERING HANDLE KIT, Tiller

▶Air Compressor (37 parts)

Ref	OEM Part #	Part Name
1	8M0050654	COMPRESSOR ASSEMBLY, Air
2	8M0114192	END CAP
3	25-86391	O-RING
4	657-853658T02	CONNECTING ROD ASSEMBLY
5	NSS	NOT SOLD SEPARATE, Piston Assy. (With Rings)
6	53-854638	LOCK RING
7	853584A10	REED PLATE ASSEMBLY
8	27-854442	GASKET
9	27-854443	GASKET
10	854334T02	HEAD, Compressor
11	22-38565	FITTING, (.375-18)
12	10-82446035	SCREW, (M8 x 35)
13	22-996642	FITTING, Elbow 90 Degree (.125-27 x .250) Nylon
14	22-856744	FITTING
15	25-831985	O-RING, (.468 x .078)
16	8M0148668	SENSOR ASSEMBLY
17	25-896699	O-RING, (.351 x .072)
18	21-888421	CHECK VALVE
19	8215832	PIN, Special
20	22-15133	FITTING
21	8M0214940	TIE STRAP, (5.50 Inches)
22	32-88306955	HOSE, (.125 x 25.00 Inches)
23	21-889851	CONNECTOR
24	10-82130025	SCREW, (M6 x 25)
25	853944T03	PULLEY
26	10-85593912	SCREW, (M6 x 12)
27	8M0047394	TENSIONER ARM
28	8547971	PULLEY
29	10-4010825	SCREW, (M10 x 25) Hex Flange - Stainless Steel
30	30-8570111	BEARING, Flanged
31	23-856549001	BUSHING
32	32-88104441	TUBING, (18.00 Inches Bulk), Cut to 8 Inches
33	24-8547953	SPRING
34	10-4000382	SCREW, (M10 x 60)
35	32-88104441	TUBING, (18.00 Inches Bulk), Cut to 13 Inches
36	54-816311T	TIE STRAP, (8.00 Inches)
37	10-82446090	SCREW, (M8 x 90)

▶Air Hoses (7 parts)

Ref	OEM Part #	Part Name
1	32-85525884	HOSE, (32.00 Inches) (Cut to 8 Inches
2	54-8M0214964	CLAMP, Hose (15.3)
3	32-885376	HOSE, Air
4	32-881041A1	HOSE ASSEMBLY, Air By-Pass
5	54-816311T	TIE STRAP, (8.00 Inches)
6	881197	MUFFLER, Air
7	32-85833939	HOSE, (17.00 Inches Bulk) (Cut to 4-1/2 Inches

▶Bleed System (5 parts)

Ref	OEM Part #	Part Name
0	891767A07	POWERHEAD ASSEMBLY Comment: 90/115
1	22-59169003	FITTING, Tee
2	32-8M0054152	TUBING, (38.00 Inches Bulk) (Cut to 3-1/4 Inches)
3	32-8M0054152	TUBING, (38.00 Inches Bulk) (Cut to 3-1/4 Inches)
4	32-8M0054152	TUBING, (38.00 Inches Bulk) (Cut to 19 Inches)

▶Bottom Cowl (39 parts)

Ref	OEM Part #	Part Name
1	100-880775A03	BOTTOM COWL, Starboard Comment: SN# 0T980000 & Up
2	8M0109217	SEAL, Cowl (41.00 Inches)
3	NSS	NOT SOLD SEPARATE, Sound Blanket (Part of 889720A00)
4	100-880774A03	BOTTOM COWL, Port Comment: SN# 0T980000 & Up
5	8M0109217	SEAL, Cowl (41.00 Inches)
6	889720A00	SOUND BLANKET KIT Comment: (PORT)
7	17-885116	PIN
8	880783T	LEVER, Cowl Latch
9	23-335891	BUSHING
10	22-889684002	FITTING, Vent Comment: SN# 0T980000 & Up
11	884468	CAM, Latch
12	12-65567	WASHER, (.265 x .750 x .048) Stainless Steel
13	10-1993716	SCREW, (M6 x 16)
14	822363T1	RETAINER
15	10-82130016	SCREW, (M6 x 16)
16	21-817519A2	CHECK VALVE ASSEMBLY, Drain
17	24-892166001	SPRING Comment: SN# 0T980000 & Up
18	10-82130040	SCREW, (M6 x 40)
19	19812T03	BRACKET, Cable Retainer
20	98889	LATCH
21	10-42975	DRIVE SCREW
22	39519	CUP
23	10-40011154	SCREW, (M8 x 50) Stainless Steel
24	11-401388	NUT, (M8)
25	12-817274	WASHER
26	16-8M0034456	STUD
27	25-855362001	GROMMET Comment: SN# 0T980000 & Up
28	23-855364	BUSHING
29	8M0043167	SEAL, Lower Cowl (44.75 Inches)
30	87-8M0235191	SWITCH, Trim
31	22-94848	FITTING
32	888508	RETAINER, Cable
33	884464	BOOT, Idle Relief
34	8M0000504	CLAMP, Upper
35	8M0000484	CLAMP, Lower
36	10-82130016	SCREW, (M6 x 16)
37	859343	FOAM
38	54-850181	TIE STRAP, (11.750 Inches)
39	23-892427	SPACER

▶Crankshaft, Pistons and Connecting Rods (22 parts)

Ref	OEM Part #	Part Name
0	891767A07	POWERHEAD ASSEMBLY Comment: (90/115)
1	400-879633T01	CRANKSHAFT ASSEMBLY
2	53-880119	RING, Retaining
3	30-43011T	BEARING, Ball (LOWER)
4	28-91800	KEY, Woodruff
5	786611	WEAR SLEEVE
6	25-35126	O-RING, (.859 x .139)
7	39-8M0071643	RING, Seal
8	31-879848A02	BEARING
9	NSS	NOT SOLD SEPARATE, Needle Bearing
10	700-896962A02	PISTON ASSEMBLY Comment: (.030 Oversize)
11	NSS	NOT SOLD SEPARATE, Piston Pin
12	40-841202	RING
13	39-875257A12	RING SET, Piston Comment: (.030 Oversize)
14	600-888470T06	CONNECTING ROD ASSEMBLY Comment: SN# 1B189549 & Up
15	12-88263	THRUST WASHER
16	29-8M0204715	BEARING, Needle
17	10-94320	SCREW, (.375-24 x 1.250)
18	31-844338A01	BEARING/CAGE KIT Comment: SN# 1B189549 & Up
19	NSS	NOT SOLD SEPARATE, Roller Bearing
20	31-879853A01	BEARING ASSEMBLY, Roller (UPPER)
21	26-879635	SEAL, Oil

▶Cylinder Block and Crankcase (36 parts)

Ref	OEM Part #	Part Name
0	891767A07	POWERHEAD ASSEMBLY Comment: 90/115
1	800-878581A09	CYLINDER BLOCK Comment: (90/115)
2	17-43044	PIN, Dowel - Without Hole (.375 x .625)
3	17-8M0036405	PIN, Center Main
4	10-4009680	SCREW, (M10 x 80)
5	8M0111325	BRACKET
6	10-81742740	SCREW, (M8 x 40)
7	22-36382	FITTING, (.250-18 x .62) Brass
8	22-185981	PLUG, Pipe (.375-18)
9	10-82127335	SCREW, (M8 x 35)
10	22-996642	FITTING, Elbow 90 Degree (.125-27 x .250) Nylon
11	21-883139001	CHECK VALVE
12	21-889830	CHECK VALVE
13	22-782792	FITTING, Elbow 45 Degree (1.25)
14	21-8282182	CHECK VALVE
15	8248576	DEFLECTOR, Water
16	22-185981	PLUG, Pipe (.375-18)
17	22-881866	FITTING
18	16-892561001	STUD, (M10 x 136)
19	12-8M0214963	WASHER, (.406 x .750 x .105) Stainless Steel
20	11-40140	NUT, (M10)
21	21-8592352	CHECK VALVE, 90 Degree (.0625-27)
22	891956	SEAL
23	22-8M0180565	PLUG, Pipe (.375-18) Brass
24	10-81742720	SCREW, (M8 x 20)
25	8M0082988	SENSOR, Crank Position
26	10-40011107	SCREW, (M5 x 16) Stainless Steel
27	880198T	COVER, Flywheel
28	25-8M0153609	GROMMET Comment: SN# 0T931541 & Up
29	22-857175	COUPLING INSERT
30	22-857176	COUPLING BODY
31	19-858240	CAP
32	32-8M0108349	TUBING, (.312) (70.00 Inches Bulk) (Cut to 43 Inches)
33	54-816311T	TIE STRAP, (8.00 Inches)
34	22-835454001	FITTING
35	880731002	BRACKET, Oil Reservoir

▶Driveshaft Housing (24 parts)

Ref	OEM Part #	Part Name
1	1598-881913T01	HOUSING ASSEMBLY, Driveshaft
2	16-9035015	STUD, (M10 x 227) Comment: (X-LONG)
3	16-8M0034462	STUD, (M10 x 190) Comment: (X-LONG)
4	12-8M0214963	WASHER, (.406 x .750 x .105) Stainless Steel
5	11-40140	NUT, (M10)
6	22-85822A4	PICKUP ASSEMBLY, Speedometer
7	22-433351	CONNECTOR, 90 Degree (.125-27) Nylon
8	22-85822T	CONNECTOR, Straight
9	881916	MOUNT
10	10-898835001	BOLT, (M12 x 154)
11	12-30119	WASHER, (.875 Inch Outside Diameter)
12	11-8M0204662	NUT, (M12)
13	88238A10	CABLE ASSEMBLY, Ground, To Swivel Bracket
14	10-41508	SCREW, (.250-20 x .500) Stainless Steel
15	8M0036786	CLAMP
16	11-35521	NUT
17	10-889833025	SCREW, (M8 x 25)
18	100-8M4500754	COVER
19	10-88417	SCREW, (#12-24 x .620)
20	12-8M0204648	WASHER, (1.5 x 3.05 x 0.13) Stainless Steel
21	12-881976	WASHER, Neoprene
22	12092A3	SPACER KIT Comment: (X-LONG)
23	17-43044	PIN, Dowel - Without Hole (.375 x .625) Comment: REAR)(X-LONG)
24	892214	PLATE WASHER

▶Electrical Components (64 parts)

Ref	OEM Part #	Part Name
1	880190T03	PLATE, Electrical
2	300-8M0077471	COIL, Ignition
3	84-884442T03	LEAD, Hi Tension
4	33-892567Q	SPARK PLUG, NGK#IZFR5J
5	10-82129130	SCREW, (M6 x 30)
6	828791	CLIP
7	10-82130012	SCREW, (M6 x 12)
8	71-8M0157742	SENSOR KIT, (0-50 PSI)
9	54-883066	CLIP, (.865)
10	22-8M0207782	FITTING Comment: SN# 0T980000 & Up
11	32-85978571	TUBING, (52.00 Inches Bulk), Cut to 6 Inches
12	10-82129114	SCREW, (M6 x 14)
13	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
14	84-858414A1	CABLE ASSEMBLY, Braided
15	54-858755	CLIP, (1.00)
16	89790642T	PCM, Propulsion Control Module Comment: (115) SN# 0T980000 & Up
17	10-82129125	SCREW, (M6 x 25)
18	12-65567	WASHER, (.265 x .750 x .048) Stainless Steel
19	25-8M0190980	GROMMET
20	23-856954	BUSHING
21	8M0207773	RELAY ASSEMBLY
22	828102	BRACKET
23	25-818967	GROMMET
24	23-8M0214955	BUSHING
25	8215832	PIN, Special
26	889600	SPACER Comment: SN# 0T980000 & Up
27	11-401376	NUT, (M6)
28	54-858954	CLIP, (.625)
29	89-817109A2	SOLENOID ASSEMBLY, (#10-32 / .3125-18 Terminals)
30	25-822179	GROMMET
31	23-8M0214955	BUSHING
32	10-32,11-45076	NUT, Brass
33	10-32,11-813938	CAP NUT,
34	84-883726A1	CABLE ASSEMBLY, Yellow/Red
35	13-53166	LOCKWASHER, (.312)
36	11-8M0204668	NUT, (.312-18)
37	84-88807A16	CABLE ASSEMBLY, (4.00 Inches) Black
38	85-8500673	BOOT, Insulator - Yellow
39	84-819514T18	HARNESS ASSEMBLY, Trim
40	84-878231A03	HARNESS ASSEMBLY, Fuse - 100 Ampere
41	84-882829A03	HARNESS ASSEMBLY, Starter
42	85-830233	BOOT, Insulator - Red
43	84-880193T03	HARNESS ASSEMBLY, Engine Wiring
44	858754	COVER, Fuse
45	88-832969T05	FUSE, Mini - Tan - 5 Ampere
46	88-832969T20	FUSE, Mini - Yellow - 20 Ampere
47	877613A1	CONNECTOR ASSEMBLY, 8 Pin
48	54-879962	CLIP
49	84-88439A25	CABLE ASSEMBLY, Battery - Positive
50	85-8500671	BOOT, Insulator - Red
51	23-8502341	BUSHING
52	12-4002318	WASHER
53	10-82446035	SCREW, (M8 x 35)
54	25-833155	GROMMET
55	880192T01	COVER
56	25-8M0153609	GROMMET Comment: SN# 0T931541 & Up
57	84-856583A07	CABLE ASSEMBLY, (12.00 Inches) Black
58	889992	SPACER
59	858953	BRACKET
60	22-875207	TEE, Fitting
61	32-85978571	TUBING, (52.00 Inches Bulk), Cut to 1-1/2 Inches
62	32-85978571	TUBING, (52.00 Inches Bulk), Cut to 52 Inches
63	22-8M0214971	COUPLER
64	22-859732	PLUG

▶Engine Overhaul Gasket Set Components (2 parts)

Ref	OEM Part #	Part Name
-	27-879855A04	GASKET SET, Powerhead
0	891956	SEAL, Cylinder Block

▶Exhaust Plate (30 parts)

Ref	OEM Part #	Part Name
1	881912T01	PLATE, Exhaust
2	17-23784	PIN, Dowel
3	881973	RETAINER
4	881915002	MOUNT Comment: SN# 0T980000 & Up
5	10-881975	SCREW, (M8 x 35)
6	10-898487	BOLT, (M12 x 175)
7	11-896963	NUT, (M12)
8	23-11289	SPACER Comment: (X-LONG)
9	43585	COUPLING
10	27-430086	GASKET
11	42966T07	TUBE, Exhaust
12	10-40011151	SCREW, (M8 x 35) Stainless Steel
13	8M0039075	SEAL
14	25-89417004	GROMMET Comment: SN# 0T928617 & Up
15	32-8M0042792	TUBE, Water - X Long (18.21 Inches) Comment: (X-LONG)
16	824661	CLAMP
17	814080001	SEAL, Upper Comment: SN# 0T980000 & Up
18	10-889833045	SCREW, (M8 x 45)
19	881918T03	CLAMP
20	25-19565002	GROMMET Comment: (.36 I.D.) SN# 0T980000 & Up
21	23-48237	BUSHING
22	892245T01	SHIFT SHAFT
23	892246A01	SHIFT LINK
24	23-892263	BUSHING
25	12-69056	WASHER, (.255 x .620 x .030) Stainless Steel
26	11-401386	NUT, (M6) Stainless Steel
27	10-40011151	SCREW, (M8 x 35) Stainless Steel
28	10-40011158	SCREW, (M8 x 70) Stainless Steel
29	87-889514T02	SWITCH
30	10-88075020	SCREW, (M3 x 20)

▶Flywheel and Alternator (17 parts)

Ref	OEM Part #	Part Name
1	200-878588T08	FLYWHEEL
2	888842T01	DAMPER
3	10-8M0143223	SCREW, (M8 x 20)
4	57-8M0026410	BELT
5	8M6013461	ALTERNATOR
6	10-82130150	SCREW, (M10 x 50)
7	12-4002319	WASHER
8	84-856583A5	CABLE ASSEMBLY
9	11-401386	NUT, (M6) Stainless Steel
10	879856T02	BRACKET, Alternator
11	8215832	PIN, Special
12	23-856975	MOUNT
13	10-82130145	SCREW, (M10 x 45)
14	12-855725	WASHER
15	19-45907	PLUG, Yellow
16	12-33001	WASHER, (.641 x 1.250 x .190)
17	11-42979	NUT, (M16)

▶Fuel Pump (20 parts)

Ref	OEM Part #	Part Name
-	27-879855A04	GASKET SET, Powerhead
1	14360T74	PUMP ASSEMBLY, Fuel
2	21-857005A1	DIAPHRAGM KIT
3	NSS	NOT SOLD SEPARATE, Gasket-Boost
4	NSS	NOT SOLD SEPARATE, Diaphragm
5	NSS	NOT SOLD SEPARATE, Gasket-Pulse
6	NSS	NOT SOLD SEPARATE, Spring
7	NSS	NOT SOLD SEPARATE, Cap
8	NSS	NOT SOLD SEPARATE, Retainer
9	NSS	NOT SOLD SEPARATE, Spring
10	NSS	NOT SOLD SEPARATE, Cap
11	144303	BASE
12	987752	PLATE
13	22-782792	FITTING, Elbow 45 Degree (1.25)
14	22-996642	FITTING, Elbow 90 Degree (.125-27 x .250) Nylon
15	10-82104540	SCREW, (M5 x 40)
16	10-82130050	SCREW, (M6 x 50)
17	22-888493	ELBOW
18	25-8M0204683	O-RING, (.301 x .070)
19	27-8M0204705	GASKET

▶Fuel Rail (24 parts)

Ref	OEM Part #	Part Name
1	880037T03	FUEL RAIL ASSEMBLY
2	19-804834	PLUG
3	804532	O-RING KIT
4	54-804830	CLAMP
5	10-804525001	SCREW PACKAGE, (2 Per)(M5 x 10) Comment: (M5 x 10)
6	25-804840	O-RING KIT
7	22-291112	FITTING
8	891820	BRACKET
9	8M0222157	INJECTOR
10	25-804530	O-RING KIT
11	25-804529	O-RING KIT
12	804522	CLAMP
13	8M0047053	VALVE ASSEMBLY, (.375 Inch Diameter), SCHRADER
14	22-805515	CAP, Shrader Valve - Brass
15	25-804840	O-RING KIT
16	8M0041097	CLAMP
17	22-996642	FITTING, Elbow 90 Degree (.125-27 x .250) Nylon
18	19-804835	PLUG
19	804532	O-RING KIT (16 per kit)
20	25-804536	O-RING
21	54-804832	CLAMP
22	25-804840	O-RING KIT
23	22-804836002	FITTING Comment: (Flange thickness is 8.65MM)
24	22-804836001	FITTING Comment: (Flange thickness is 2.65MM)

▶Fuel System (15 parts)

Ref	OEM Part #	Part Name
1	32-889712001	HOSE, Vent, To Vent Fitting
2	54-816311T	TIE STRAP, (8.00 Inches)
3	32-881040A1	HOSE ASSEMBLY, Fuel Supply
4	32-878506A1	HOSE ASSEMBLY, Fuel By-Pass
5	884820	SHRADER VALVE
6	25-891778	O-RING
7	54-884819	CLIP
8	10-82130012	SCREW, (M6 x 12)
9	32-8M0108349	TUBING, (.312) (70.00 Inches Bulk) (Cut to 6-1/2 Inches) To Crankcase
10	22-822769	CONNECTOR
11	32-8M0108349	TUBING, (.312) (70.00 Inches Bulk) (Cut to 28 Inches)
12	32-8M0108349	TUBING, (.312) (70.00 Inches Bulk) (Cut to 8-1/2 Inches
13	54-8M0214964	CLAMP, Hose (15.3)
14	32-883545002	HOSE
15	26-888852	SEAL, Fuel Director

▶Gear Housing(Driveshaft)(2.07:1 Gear Ratio) (44 parts)

Ref	OEM Part #	Part Name
-	31-803496T2	BEARING/SEAL KIT (W/O Forward Bearing)
0	1667-9011J35	GEAR HOUSING ASSEMBLY, Complete (4.25 Inch/107.95 mm Torpedo Diameter) (COMPLETE) Comment: (X-LONG)
1	1667-9011G59	GEAR HOUSING ASSEMBLY, Basic Comment: (BASIC)
2	17-8M0084244	PIN, Dowel - With Hole (.375 x .625) (FRONT)
3	43046	TUBE, Oiler
4	10-79953Q04	SCREW KIT, (.375-16 x .250) Drain
5	12-191833	SEAL
6	17-43044	PIN, Dowel - Without Hole (.375 x .625) (REAR)
7	31640T07	TRIM TAB
8	10-825427	SCREW, (.437-14 x 1.250) Stainless Steel
9	12-451761	WASHER, (.453 x .812 x .105) Black Oxide
10	43040T1	CARRIER ASSEMBLY
11	NSS	NOT SOLD SEPARATE, Needle Bearing
12	97-826134Q	ANODE
13	11-401386	NUT, (M6) Stainless Steel
14	10-4000333	SCREW, (M6 x 40)
15	43-881259T	GEAR, Pinion - 14 Teeth Comment: (Also Part of 43-881260A3)
16	11-35921	NUT, (.625-18)
17	850307	CAM, Shift Control
18	31-883047A1	BEARING ASSEMBLY, Tapered Roller
19	15-44492A1	SHIM SET
20	45-888934A1	DRIVESHAFT ASSEMBLY Comment: (X-LONG)
21	42461A1	SLEEVE/RING KIT
22	NSS	NOT SOLD SEPARATE, Seal Ring
23	43055A4	COVER ASSEMBLY, Water Pump
24	27-430331	GASKET
25	27-8M0214931	GASKET
26	26-43036	SEAL, Oil (LOWER)
27	26-43035	SEAL, Oil (UPPER)
28	27-8172771	GASKET
29	817275A2	HOUSING KIT, Upper Water Pump
30	8M0204709	FACEPLATE
31	10-82684430	SCREW, (M6 x 30)
32	430232	SEAL
33	28-8M0204723	KEY
34	47-43026T2	IMPELLER
35	10-82684425	SCREW, (M6 x 25)
36	853908A1	SHIFT SHAFT ASSEMBLY Comment: (X-LONG - 17 IN.)
37	53-29641	E RING
38	23-43052A4	BUSHING ASSEMBLY
39	25-8M0204681	O-RING, (1.424 x .103)
40	26-8M0204708	SEAL, Oil
41	10-82684425	SCREW, (M6 x 25)
42	26-861415	FACE SEAL

▶Gear Housing(Driveshaft)(2.33:1 Gear Ratio) (44 parts)

Ref	OEM Part #	Part Name
-	31-803496T2	BEARING/SEAL KIT (W/O Forward Bearing)
0	1667-9011J39	GEAR HOUSING ASSEMBLY, Complete (4.25 Inch/107.95 mm Torpedo Diameter) (COMPLETE) Comment: (X-LONG)
1	1667-9011G59	GEAR HOUSING ASSEMBLY, Basic Comment: (BASIC)
2	17-8M0084244	PIN, Dowel - With Hole (.375 x .625) (FRONT)
3	43046	TUBE, Oiler
4	10-79953Q04	SCREW KIT, (.375-16 x .250) Drain
5	12-191833	SEAL
6	17-43044	PIN, Dowel - Without Hole (.375 x .625) (REAR)
7	31640T07	TRIM TAB
8	10-825427	SCREW, (.437-14 x 1.250) Stainless Steel
9	12-451761	WASHER, (.453 x .812 x .105) Black Oxide
10	43040T1	CARRIER ASSEMBLY
11	NSS	NOT SOLD SEPARATE, Needle Bearing
12	97-826134Q	ANODE
13	11-401386	NUT, (M6) Stainless Steel
14	10-4000333	SCREW, (M6 x 40)
15	NSS	NOT SOLD SEPARATE, Pinion Gear (12 Teeth) Comment: (PART OF 43-882813A3)
16	11-35921	NUT, (.625-18)
17	850307	CAM, Shift Control
18	31-883047A1	BEARING ASSEMBLY, Tapered Roller
19	15-44492A1	SHIM SET
20	45-888934A1	DRIVESHAFT ASSEMBLY Comment: (X-LONG)
21	42461A1	SLEEVE/RING KIT
22	NSS	NOT SOLD SEPARATE, Seal Ring
23	43055A4	COVER ASSEMBLY, Water Pump
24	27-430331	GASKET
25	27-8M0214931	GASKET
26	26-43036	SEAL, Oil (LOWER)
27	26-43035	SEAL, Oil (UPPER)
28	27-8172771	GASKET
29	817275A2	HOUSING KIT, Upper Water Pump
30	8M0204709	FACEPLATE
31	10-82684430	SCREW, (M6 x 30)
32	430232	SEAL
33	28-8M0204723	KEY
34	47-43026T2	IMPELLER
35	10-82684425	SCREW, (M6 x 25)
36	853908A1	SHIFT SHAFT ASSEMBLY Comment: (X-LONG)
37	53-29641	E RING
38	23-43052A4	BUSHING ASSEMBLY
39	25-8M0204681	O-RING, (1.424 x .103)
40	26-8M0204708	SEAL, Oil
41	10-82684425	SCREW, (M6 x 25)
42	26-861415	FACE SEAL

▶Gear Housing, Propeller Shaft - 2.07:1 Gear Ratio (34 parts)

Ref	OEM Part #	Part Name
-	31-803496T2	BEARING/SEAL KIT (W/O Forward Bearing)
0	1667-9011J35	GEAR HOUSING ASSEMBLY, Complete (4.25 Inch/107.95 mm Torpedo Diameter) (COMPLETE) Comment: (X-LONG)
1	1667-9011G59	GEAR HOUSING ASSEMBLY, Basic Comment: (BASIC)
2	31-30894A1	BEARING SET, Cup And Cone
3	NSS	NOT SOLD SEPARATE, Cup
4	43-881260A3	GEAR, Forward - 29 Teeth
5	31-30895T	BEARING, Needle
6	53-856823	RING, Retaining
7	850315A1	FOLLOWER KIT, Cam
8	30-44530	BALL
9	NSS	NOT SOLD SEPARATE, Slide
10	24-850327	SPRING
11	52-850048T	CLUTCH
12	17-8M0100263	PIN, Cross
13	24-30893	SPRING
14	44-8M0140445	PROPELLER SHAFT
15	43-850036T	GEAR, Reverse - 29 Teeth
16	8M0168901	CARRIER ASSEMBLY, Bearing
17	25-8M0214974	O-RING, (3.609 x .139)
18	31-30956T	BEARING, Needle
19	26-8M0205728	SEAL, Oil (INNER)
20	26-8M0205729	SEAL, Oil (OUTER)
21	31-12578T	BEARING, Roller
22	12-12577	THRUST WASHER
23	31-12576	BEARING, Thrust
24	16-8M0034456	STUD, (M8 x 48)
25	12-855941	WASHER
26	11-401378	NUT, (M8)
27	15-44491A1	SHIM SET
28	NSS	NOT SOLD SEPARATE, Insert
29	NSS	NOT SOLD SEPARATE, Decal-G/H Pinion Ident.
30	8M0150151	FLO TORQUE III KIT
31	NSS	NOT SOLD SEPARATE, Adaptor
32	NSS	NOT SOLD SEPARATE, Lock Nut

▶Gear Housing, Propeller Shaft - 2.33:1 Gear Ratio (34 parts)

Ref	OEM Part #	Part Name
-	31-803496T2	BEARING/SEAL KIT (W/O Forward Bearing)
0	1667-9011J39	GEAR HOUSING ASSEMBLY, Complete (4.25 Inch/107.95 mm Torpedo Diameter) (COMPLETE) Comment: (X-LONG)
1	1667-9011G59	GEAR HOUSING ASSEMBLY, Basic Comment: (BASIC)
2	31-30894A1	BEARING SET, Cup And Cone
3	NSS	NOT SOLD SEPARATE, Cup
4	43-882813A3	GEAR KIT, Forward And Pinion 28 Teeth (28 TEETH)
5	31-30895T	BEARING, Needle
6	53-856823	RING, Retaining
7	850315A1	FOLLOWER KIT, Cam
8	30-44530	BALL
9	NSS	NOT SOLD SEPARATE, Slide
10	24-850327	SPRING
11	52-850048T	CLUTCH
12	17-8M0100263	PIN, Cross
13	24-30893	SPRING
14	44-8M0140445	PROPELLER SHAFT
15	43-882814T	GEAR, Reverse - 28 Teeth (28 TEETH)
16	8M0168901	CARRIER ASSEMBLY, Bearing
17	25-8M0214974	O-RING, (3.609 x .139)
18	31-30956T	BEARING, Needle
19	26-8M0205728	SEAL, Oil (INNER)
20	26-8M0205729	SEAL, Oil (OUTER)
21	31-12578T	BEARING, Roller
22	12-12577	THRUST WASHER
23	31-12576	BEARING, Thrust
24	16-8M0034456	STUD, (M8 x 48) (M8 X 48 MM)
25	12-855941	WASHER
26	11-401378	NUT, (M8)
27	15-44491A1	SHIM SET
28	NSS	NOT SOLD SEPARATE, Insert
29	NSS	NOT SOLD SEPARATE, Decal-G/H Pinion Ident.
30	8M0150151	FLO TORQUE III KIT
31	NSS	NOT SOLD SEPARATE, Adaptor
32	NSS	NOT SOLD SEPARATE, Lock Nut

▶Oil Tank (21 parts)

Ref	OEM Part #	Part Name
1	1200-879844T08	TANK, Oil
2	19299A1	VENT ASSEMBLY
3	21-64871	VALVE
4	87-856156T04	SWITCH
5	12-72761	WASHER, (.203 x .562 x .060) Stainless Steel
6	10-58376	SCREW, (.164-18 x .375)
7	23-883821	BUSHING
8	25-883820001	GROMMET Comment: SN# 0T980000 & Up
9	35-883037T	FILTER
10	883044001	COVER, To Air Compressor
11	10-883075	SCREW, (#10-16 x 1.25)
12	19-854310	PLUG
13	54-816311T	TIE STRAP, (8.00 Inches)
14	25-879857	BOOT
15	36-8M0073266	CAP
16	25-26318T	O-RING
17	887776002	CHAIN
18	11-65110	NUT
19	10-82446035	SCREW, (M8 x 35)
20	12-4002318	WASHER
21	37-881865	DECAL, Caution-Start in Gear Comment: (Start In Gear)

▶Oiling System (14 parts)

Ref	OEM Part #	Part Name
1	32-88306955	HOSE, (.125 x 25.00 Inches)
2	32-88104441	TUBING, (18.00 Inches Bulk) (Cut to 13 Inches
3	32-88104441	TUBING, (18.00 Inches Bulk) (Cut to 13-1/2 Inches)
4	32-88104441	TUBING, (18.00 Inches Bulk) (Cut to 18 Inches)
5	32-82381455	TUBING, (25.00 Inches Bulk) (Cut to 3-1/4 Inches
6	32-82381455	TUBING, (25.00 Inches Bulk) (Cut to 7 Inches
7	35-875284T01	FILTER, Oil - In Line
8	56762	TIE STRAP, (4.00 Inches)
9	54-816311T	TIE STRAP, (8.00 Inches)
10	32-828547412	CONDUIT, (10.00 Inches Bulk) (Cut to 6 Inches
11	8M0214940	TIE STRAP, (5.50 Inches)
12	8M0185614	PUMP ASSEMBLY, Oil
13	10-81893420	SCREW, (M8 x 20)
14	32-88104441	TUBING, (18.00 Inches Bulk) (Cut to 8 Inches

▶Poppet/Thermostat Mounting (16 parts)

Ref	OEM Part #	Part Name
0	891767A07	POWERHEAD ASSEMBLY Comment: 90/115
1	884389	POPPET
2	812887002	DIAPHRAGM Comment: SN# 0T932791 & Up
3	12-94182	WASHER
4	10-69570	SCREW, (#10-16 x .750) (10-16 x 3/4)
5	24-892321	SPRING
6	8M0036780	COVER
7	10-82127335	SCREW, (M8 x 35)
8	27-879855001	GASKET Comment: SN# 0T832041 & Up
9	27-8M0204714	GASKET Comment: SN# 0T961337 & Up
10	833072004	THERMOSTAT, 62Â°C (143Â°F) Comment: SN# 0T980000 & Up
11	54-814634	CLAMP
12	10-82130012	SCREW, (M6 x 12)
13	8M0148668	SENSOR ASSEMBLY
14	25-896699	O-RING, (.351 x .072)
15	23-892265	SPACER

▶Power Trim Components (19 parts)

Ref	OEM Part #	Part Name
-	25-893914A02	O-RING KIT (COMPLETE TRIM)
1	8M0171821	SHOCK ROD KIT
2	25-8M0171819	O-RING KIT, Rebuild
3	8M0171822	PISTON ASSEMBLY, Memory
4	893916A01	CYLINDER ASSEMBLY
5	893905A02	VALVE KIT, Trim Limit
6	893906A02	PUMP ASSEMBLY
7	893907A02	MOTOR KIT
8	22-8134351	PLUG
9	893929A01	MANUAL RELEASE ASSEMBLY
10	893909A02	MANIFOLD KIT
11	10-809876A1	SCREW KIT (MOTOR)
12	88238A18	CABLE ASSEMBLY
13	809877A1	DRIVESHAFT/SEAL KIT
14	35-893912A02	FILTER KIT
15	893913A02	POPPET KIT
16	17-821539	PIN, Trilobe
17	17-818898	PIN, Anchor
18	99625002	SHAFT Comment: SN# 0T980000 & Up

▶Reed Block (34 parts)

Ref	OEM Part #	Part Name
0	891767A07	POWERHEAD ASSEMBLY Comment: 90/115
1	42881A1	SHIFT RAIL ASSEMBLY
2	14-42981	TAB WASHER
3	10-40001134	SCREW, (M8 x 25)
4	988851	SLIDE
5	11-401386	NUT, (M6) Stainless Steel
6	12-35459	WASHER
7	11-401386	NUT, (M6) Stainless Steel
8	27-430075	GASKET
9	1169-858552T2	CAP ASSEMBLY, Lower End
10	21-426585	CHECK VALVE
11	26-419533	SEAL, Oil
12	25-89224	O-RING
13	10-4010825	SCREW, (M10 x 25) Hex Flange - Stainless Steel
14	879839A00	PLATE ASSEMBLY, Reed Adaptor
15	27-879840	GASKET
16	22-768431	FITTING
17	879841A03	COVER
18	27-879843	GASKET
19	10-82127345	SCREW, (M8 x 45)
20	10-82127335	SCREW, (M8 x 35)
21	828623T4	REED BLOCK
22	27-880122	GASKET
23	10-4007420	SCREW, (M6 x 20)
24	854445	SENSOR, MAP
25	884522	BRACKET, MAP Sensor
26	10-82130016	SCREW, (M6 x 16)
27	8M0148668	SENSOR ASSEMBLY
28	25-896699	O-RING, (.351 x .072)
29	84-88439A26	CABLE ASSEMBLY, Battery - Negative
30	10-81893414	SCREW, (M8 x 14)
31	12-36001	WASHER
32	54-889559	CLAMP
33	12-69056	WASHER, (.255 x .620 x .030) Stainless Steel

▶Service/Support Material (1 parts)

Ref	OEM Part #	Part Name
0	37-891765A05	DECAL, EPA Label Information Comment: 2005

▶Starter Motor (13 parts)

Ref	OEM Part #	Part Name
1	50-892339T01	STARTER MOTOR ASSEMBLY Comment: SN# 0T842987 & Below
2	10-803005	THRU BOLT
3	43-880805A1	GEAR KIT
4	809463A1	SOLENOID KIT
5	10-69035	SCREW AND LOCKWASHER, (.250-20 x .625) Stainless Steel
6	84-93388A1	CABLE ASSEMBLY, (6.00 Inches) Black
7	37-8272822	DECAL, Warning, High Voltage
8	13-400255	LOCKWASHER, (M5)
9	11-400211	NUT, (M5) Stainless Steel
10	13-8M0204647	LOCKWASHER, (.312)
11	11-400213	NUT, (M8) Stainless Steel
12	23-8M0034918	COLLAR
13	8M0043276	STOP

▶Swivel Bracket and Steering Arm (24 parts)

Ref	OEM Part #	Part Name
1	1400-8M0220957	SWIVEL BRACKET
2	26-87735	SEAL, Oil
3	23-818764	BUSHING
4	25-8M0214926	O-RING
5	23-816039	SPACER
6	22-8M0169589	FITTING, Grease
7	23-821207	BUSHING
8	10-64014	SCREW, (.250-28 x .500)
9	99661A35	SWIVEL PIN ASSEMBLY
10	92876A12	LINK ROD ASSEMBLY
11	10-849838	SCREW, (.375-24 x 1.250)
12	11-8M0204726	NUT, (.375-24) Stainless Steel
13	12-37828	WASHER, (.390 x .625 x .062) Stainless Steel
14	8M0000519	BUMPER
15	881914T01	YOKE, Bottom
16	53-67684	RING, Retaining
17	12-816432	THRUST WASHER
18	NSS	NOT SOLD SEPARATE, Decal-Serial Overlaminate
19	NSS	NOT SOLD SEPARATE, Decal-Serial Number
20	821400A2	SENDER KIT, Power Trim
21	84-11149A58	CABLE ASSEMBLY
22	10-852368	SCREW, (#10-24 x .750)
23	10,13-26996	LOCKWASHER, Stainless Steel
24	12-89302	WASHER, (.203 x .406 x .040)

▶Throttle Body (30 parts)

Ref	OEM Part #	Part Name
1	880129T02	THROTTLE BODY ASSEMBLY Comment: (115)
2	891770	RETAINER
3	10-891771	SCREW
4	26-891772	SEAL
5	26-891772002	SEAL Comment: (Use with Oetiker Clamp)
6	54-804842001	CLAMP, Oetiker
7	10-891771001	SCREW
8	12-891773	WASHER
9	12-891773001	WASHER
10	23-891774	BUSHING
11	853659A01	LEVER KIT, Throttle
12	858851A03	LEVER ASSEMBLY, Throttle
13	10,13-69432	LOCKWASHER, External
14	12-881992	WASHER, Spool
15	12-881991	WASHER, Cupped
16	10-889354	SCREW, Special
17	677483	ROLLER
18	891775	BRACKET
19	10-1993716	SCREW, (M6 x 16)
20	8819881	CABLE
21	891776	CAM
22	23-421621	BUSHING
23	12-35462	WASHER, (.2656 x .625 x .0625) Stainless Steel
24	10-4000333	SCREW, (M6 x 40)
25	881967	COUPLER
26	8M6005165	INDICATOR, Throttle Position
27	10-891771002	SCREW
28	892623001	INSERT Comment: (90)
29	54-889691	CLAMP, Oetiker
30	32-828547253	CONDUIT, (.250 Inside Diameter x 3.00 Feet Bulk), Cut to 13 Inches

▶Throttle Lever and Linkage (12 parts)

Ref	OEM Part #	Part Name
1	881969A1	LEVER ASSEMBLY, Throttle
2	822458	BUMPER
3	23-812930A1	BUSHING
4	NSS	NOT SOLD SEPARATE, Insert
5	10-4007180	SCREW, (M10 x 45)
6	881970A2	ARM ASSEMBLY, Bracket Lever
7	10-40011131	SCREW, (M6 x 35) Stainless Steel
8	11-400212	NUT, (M6) Stainless Steel
9	42942	CAP
10	10-4006731	SCREW, (M6 x 16)
11	12-35459	WASHER
12	11-401386	NUT, (M6) Stainless Steel

▶Top Cowl (13 parts)

Ref	OEM Part #	Part Name
0	37-891819A04	DECAL SET Comment: (MARINER 90)
1	100-8M0075375	TOP COWL ASSEMBLY Comment: (MARINER)
2	813546003	MOUNT Comment: SN# 0T980000 & Up
3	828716A2	CAP
4	828352	SEAL
5	8283511	SEAL
6	892208A01	HOOK KIT, Rear Comment: BRONZE
7	10-82130016	SCREW, (M6 x 16)
8	880781A02	SOUND BLANKET KIT
9	NSS	NOT SOLD SEPARATE, Sound Blanket-Starboard
10	NSS	NOT SOLD SEPARATE, Sound Blanket-Top
11	NSS	NOT SOLD SEPARATE, Decal-Clean Cowl Cling-On
12	NSS	NOT SOLD SEPARATE, Decal-Break-In

▶Transom Bracket (29 parts)

Ref	OEM Part #	Part Name
1	3426-828334T02	BRACKET, Transom (Starboard)
2	3425-828333T07	BRACKET ASSEMBLY, Transom (Port)
3	22-8M0169588	FITTING, Grease (Port)
4	826125A1	TILT TUBE Comment: (Stainless Steel)
5	11-826135	NUT, (1.00-14) Brass/Nickel Plate Comment: (Use with Stainless Steel Tilt Tube)
6	25-45711	O-RING, (.612 x .103)
7	13-88750	WASHER
8	11-826164	NUT, (.875-14) Comment: (Use with Stainless Steel Tilt Tube)
9	10-8M0149747	SCREW, (.500-20 x 4.500)
10	12-8M0204665	WASHER, (.530 x .870 x .105) Stainless Steel
11	12-8M0204648	WASHER, (1.5 x 3.05 x 0.13) Stainless Steel
12	11-82671117	NUT, (.500-20)
13	24-830899	SPRING, Tension
14	8M0109798	LEVER ASSEMBLY, Tilt Lock
15	23-65830	NYLINER
16	24-830900	SPRING, Compression
17	99633	KNOB
18	17-99615	PIN, Groove
19	17-893709	PIN
20	8M0086406	BRACKET, Anchor
21	10-858771	SCREW, (M10 x 30)
22	12-4002319	WASHER
23	11-40114	NUT, (M10)
24	97-818298T1	ANODE KIT
25	10-8M0204707	SCREW, (M6 x 25)
26	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
27	54-22740	CLIP
28	8M0084613	C WASHER
29	10-878609	SCREW, (#10-16 x .600)

▶Vapor Separator (35 parts)

Ref	OEM Part #	Part Name
-	880133T12	VAPOR SEPARATOR ASSEMBLY
1	889317T1	COVER KIT
2	NSS	NOT SOLD SEPARATE, Seat
3	889318001	PLATE, Baffle
4	10-883223	SCREW, (M6 x 16)
5	27-889319	GASKET
6	22-883556	FITTING
7	25-8M0062785	O-RING
8	22-889329	FITTING
9	19-883208	PLUG
10	35-8M0122423	FILTER, Fuel
11	889320A1	FLOAT KIT
12	F10064	SHAFT
13	888725T02	PUMP ASSEMBLY, Fuel - High Pressure
14	8M6000589	SLEEVE
15	25-8893162	O-RING
16	26-889321	SEAL
17	889328	RETAINER
18	1395-9643	SCREW
19	888733T02	PUMP ASSEMBLY, Boost
20	25-889322	GROMMET
21	25-889316	O-RING
22	26-8M6001413	SEAL
23	889324T03	BOWL KIT
24	84-889325A02	WIRE
25	NSS	NOT SOLD SEPARATE, Check Valve
26	22-855424011	FITTING
27	889326A1	VALVE KIT, Inlet
28	10-889327A1	SCREW, Drian
29	25-8893161	O-RING
30	8M0214989	SENSOR, Water
31	22-782792	FITTING, Elbow 45 Degree (1.25)
32	25-627021	O-RING, (.301 x .070)
33	889430	INSERT
34	54-816311T	TIE STRAP, (8.00 Inches)

▶Vapor Separator/Fuel Rail Mounting (10 parts)

Ref	OEM Part #	Part Name
1	16-8M0063255	STUD, (M10 x 91)
2	11-826292	NUT, (M10) Brass/Nickel Plated
3	8M6001744	INJECTOR ASSEMBLY, Air Comment: SN# 0T980000 & Up
4	12-828694A1	WASHER ASSEMBLY, Cupped
5	23-883050	SPACER
6	25-855362001	GROMMET Comment: SN# 0T980000 & Up
7	12-4002318	WASHER
8	10-82446060	SCREW, (M8 x 60)
9	10-82446035	SCREW, (M8 x 35)
10	23-855364	BUSHING

▶Water Hoses (5 parts)

Ref	OEM Part #	Part Name
1	35-8348084	STRAINER
2	54-816311T	TIE STRAP, (8.00 Inches)
3	32-883060001	HOSE Comment: SN# 0T980000 & Up
4	32-85833939	HOSE, (17.00 Inches Bulk) (Cut to 10-1/2 Inches)
5	32-85833939	HOSE, (17.00 Inches Bulk) (Cut to 6-1/2 Inches) To Telltale

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 75 DFI (3 CYL.)(1.5L) running reliably season after season. Most of these tasks can be performed with basic tools and the factory service manual.

Replace water pump impeller and inspect wear plate
Change engine oil and oil filter (check drain plug washer)
Replace spark plugs and check ignition timing
Drain and refill lower unit gear oil; inspect for water contamination
Inspect fuel lines, primer bulb, and fuel filter for deterioration
Check and replace sacrificial anodes (zinc or aluminum)
Inspect propeller for damage; check shaft seal and cotter pin
Check valve clearance (refer to service manual for specifications)
Lubricate all grease points (steering, tilt tube, shift linkage)
Inspect control cables and throttle/shift linkage for smooth operation

Pro Tip: Always flush the engine with fresh water after saltwater use — even a quick 10-minute flush significantly extends component life.
Pro Tip: Use fuel stabilizer in the tank before winter storage, and fog the cylinders to prevent internal corrosion during extended periods of non-use.

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